Speaker Installation Kit for Mercedes speaker rings allow you to change original working speaker against standard brands of high quality speaker. Working Speaker often have a vehicle-specific form, so no retrofit speaker in fits DIN format in the mounting bay. By using this rings can be speakers into your vehicle without great effort. The installation is simple and can be achieved in a short time. Suitable for the following models Mercedes E Class (W124) Saloon 11/1984 – > 08/1995 place of installation: back shelf speakers: 120 mm mounting cut-out: 110,50 mm Ring Outer Diameter: 127,50 mm Ring height: 27 mm Included in the box contents 1 pair of speaker adaptor rings 1 Pair of Speaker adaptors